Automatic stereotype plate casting machine



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AUTOMATIC STEREOTYPE PLATE CASTING MACHINE Original Filed'June 28, 1928 16 Sheets-Sheet 16 a warcrr- A Wha Patented 8, 1932 UNITED STATES HENRY AJWISE WOOD, OF NEW YORK, N.

Y ASSIGNOB TO WOOD NEWSPAPER MA- OEIITERY. CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF VIRGINIA AUTOMATIC STEREOTYPE PLATE CASTING MACHINE Application filed June 28, 1928, Serial L This invention relates to a machine for casting stereotype printing plates of the J unior autoplate type in which the cylindrical core and back are arranged vertically.

The principal objects of the invention are to provide a construction in which the three ordinarily separate functions of opening and closing the mold, pouring the metal and severing the tail are performed automatically by the machine without any effort or attention I v on the part of the operator except the starting and stopping of the motor which drives the machine; to provide for the automatic continuing of the casting operation to produce a plurality of plates; to provide a combination of parts by which a positive actionis employed to secure a half revolution of the I cylinder while the box'is moving the late from the casting to delivery position an positively stops the cylinder and prevents any.

over running at the end of this operation, without the use of any detents or ratchet mechanism and in which no shock is felt at either end of the motion on account of this said positive mechanism; to provide for a smooth action of the casting box and in sure a quietly operating machine; to provide a construction which will operate at high speed; to provide exact timing of the various mechanism; to provide means for starting and stopping the machine without the use of clutches, the motor being permanently connected with the driving shaft, to provide a push button starter preferably, comprising three buttons,'one a start button which starts the rotation of the motor when pressed at any time, another being connected to start the motor from any stop position and a third conth'elimit switch whereby the motor wil come to a stop; to provide means whereby when the Y usual clips arecleft open or the matriid bars No. 288,847. Renewed June 29, 1931.

vented from leaving its stop position, the ac tion being the same as that accomplished by pushing the stop button, this being claimed broadly in my co-pending application Serial No. 356,494, filed April 19, 1929, and patented on even date herewith; to provide .means whereby the exact moment of pouring may be adjusted to suit requirements; to provide means whereby the pump 'may be operated by hand if desired, although ordinarily operated automatically to provide means whereby the cylinder also can be operated by hand, without actuating the rest of the mechanism; to provide improved and simplified means for automatically swinging the saw hanger into place just before the cylinder starts its'rotation; to provide means for disconnecting the saw hanger sov that it can be oscillated by hand, if desired, for removal of the saw or when it is desired to deliver a plate without sawing oil the tail; to provide novel means for cooling the back of the plate without the used a number of small spraying orifices which are likely to be plugged up after considerable use and means by which water can -be delivered through large holes thus flooding the water on the grooves in the interior surface formed integrally with the cylinder and causing it to flow outwardly in an even manner andwithout any turbulence, thereby using less water than in the case of coolin by sprinkling andhaving a construction w ich is'not likely to clog; to provide connections between the cooling mechanism and the mechanism for controlling the pour to prevent water being delivered when the metal is not delivered to the casting box, thus avoiding chilling of the mold prior to the casting of the plates; to provide means whereby the automatic, machine can be put through its various operations without actually pouring metal into the mold or water into the cooling mechanism; to provide a counter for showing the number of operations of the machine at all times actuated so as to skip one opera tion of the Geneva motion employed in operatin the machine, thus causing one operation of t e counting mechanism totwo revolutions of the Geneva driving shaft in accordthe subtractin mechanism which can be op-.

erated at any time during the cycle of the machine whether the counting mechanism is at that instant in operation or not;to provide means whereby the use of this subtracting mechanism willnot interfere with the count-' er except to subtract one from the count and to provide improvements in the details of the mechanism for accomplishing these various results.

Other objects and advantages of the inven tion will appear hereinafter.

Reference is to be had to the accompanying drawings in which Fig. 1 is a plan of a stereotype plate casing machine of the Junior autoplate type, showing a preferred embodiment of this invention; I

Fig. 2 is a side view of the same;

Fig. 3 is a diagram showing the various operations of the machine;

Fig. 4 is a wiring diagram of the control circuit for the driving motor;

. Fig. 5 is a plan view of the driving mechanism for the cylinder; I

Figs. 6 and 7 are sectional views on the lines 66 and 77 respectively of Fig. 5;

, 8 of Fig. 2. a

' Fig. 9 is a sectional view on the line 9-9 Fig. 8 is a sectional view on' the line 88 of i Fig. 1, looking in the direction of the arrow of Fig. 8; p

Fig. 9 is a diametrical sectional view of a part 'of the cylinder showing the cooling means;

Fig. 10 is a side-view of the cylinder and the parts for operating it, certain of said parts being in radial section;

Fig. 11 is a plan view of one of the members of the Geneva motion, looking in the direc-' i. tion of the arrow 11 of Fig. 10.

Fi 12 is an inverted plan'of'the clutch mem er, looking in the direction of the arrow.

12 of Fig. 10.

Fig. 13 is a planview of the corresponding.

member which is f'astenedto the cylinder and looking in the direction of the arrow 13 of Fig. 10; a

Fig. 14 is a side ciated parts constituting a part of the said back moving mechanism;

1 Fig. 16 is a view mainly in diametrical secing mechanism;

view partlyin section of I the mechanism for reciprooatin the back;-

Fig. 15 1s a side view of the yo e and asso tion of the tog le link mechanism for reciprocating the back;

Fig. 17 is a detail of the toggle link adjusting worm;

Fig. 18 is a detail of the toggle link eccentric stud;

Fig. 19 is an end view of the same, looking in the direction of the arrow 19'of Fig. 18;

Fig. 2Q is a sectional view on the line 2() 2O ofFig. 16;

Fig. 21 is a similar view showing the operation of the switch box roll;

Fig. 22 is an enlarged sectional view on a horizontal plane of one edge of the mold,

Fig. 23 is a side view of the same, looking in the direction of the arrow 23 of Fig. 22;

Fig. 24 is a view similar to Fig. 22 showing the position when the matrix clip is not locked before the back starts to close, thereby operating the switch;

Fig. 25 is a side view of the same, looking in the direction of the arrow 27 of Fig. 26. Fig. 26 is a view similar to Fig. 22 showing the position of the parts when the matrix clip is not set to grip the matrix, thereby operating the switch;

Fig. 27 is a side view of the same, looking in the direction of the arrow 27 of Fig. 26. Fig. 28 is a plan of the back and cylinder separated, indicating the movement of the saw; v

Fig. 29 is a side view-partly in section of the saw supporting and operating means;

Fig. 30 is a side View of the saw cam lock- Fig. 31 is a diametrical sectional View of the same. on the line 31- 31 of Fig. 30;

Figs. 31 and 31 are diametrical sectional views showing a modification in two positions';

a Fig. '32 is a sectional view showing the position of the cam and cam roll thereof;

. Fig. 33 is a side view of the pump operating mechanism;

Fig. 34 is a sectional view of 'the operating means therefor; Fig. 35 is a plan view of a connecting means used in the pump operating mechanism, looking in the direction of the arrow 35 of Fig. 33. V

Fig. 36 is a sectional view ofthe pump on the line 36-36 of Fig. 1; Y

Fig. 37 is a side view 'of'the upper part of the same looking in the direction of the I Flg. '39v is a sectional view of the pivot connect-ion therefor taken on the line 39-39 of Fig. 38; Fig. 40 is a diametrical sectional view of I pouring the metal, and severingthe tail.

"cates the count.

The making of a stereotype plate on an upright machine which casts the plate and saws the ends is a laborious job for the operator. He has to control manually three operations, opening and closing the mold,

This invention is designed to provide for controlling automatically by the machine, without any effort on the part of the operator, except to start and stop the motor, these three operations. Furthermore it is necessary at times to cause the mechanism to perform the operations appropriate to each of these operations separately without casting a plate, and

' this machine is provided with means whereby thesemotions can be performedeach by itself without running the whole machine or running a plate through the machine.

The device is provided also preferably with i a counter and with means for preventing the with the segmental recess 15.

operation of the counter when the machine is operated so as to test it without casting a plate, and means for subtracting on the counter to compensate for imperfect plates that may have been run through. This will indicate the general nature of the invention, although many operations have not been mentioned.

The machine is shown in the drawings as mounted on a frame 1 and run by a motor 2 carried by the frame. This motor, by a sprocket chain or belt,drives the drivingshaft 3. This chain or belt operates a sprocket wheel or pulley 4 directly and this is loose on the shaft. This wheel is'connected with the shaft through a hub 5 keyed to the shaft 3 and connected to the wheel 4 by a shear pin 6 for an obvious purpose.

On the main shaft 3 are the means for operatin thevarious arts of the machine. A worm drives a shall, 8 from which is driven a gear 9 on a Geneva driving shaft 10. The shaft 10 is mounted in two bearings 11 on the frame and is capable of sliding in these bearings as well as rotating.

The gear 9 has integrally mounted thereon a segmental circular rojection 12 which const1tutes a part of a'Giimeva motion, the other part of which comprises a wheel 13"which is provided with four radial grooves 14 and four segmental recesses 15 placed as usual in the Geneva motion. These segmental recesses 'fit the circumference of the pro'ection 12 as indicated in Fig. .5, and the eneva wheel 13 of course cannot operate while the parts are in the position shown in that figure,

1. .e. whilethesegment 12 is in engagement .On the gear 9 is a roll 16 which is adapted engage in the radial grooves 14 for the purpose of rotating the wheel 13 when the parts come to the proper position and the projection 12 passes out of contact with the recess 15. The radial grooves 14 are arranged so as to be in tangential position with respect to the gear 9 when the roll enters them and also when it leaves them. Thus the stop and start of the wheel 13 are gradual and smooth. This wheel 13 is provided with an internal gear 17 on the back side, and is mounted in bearings which receive an integral stud at the center of the wheel. This gear 17 operates a gear 18 which is mounted slidably and freely on the column 19 of the rotatable cylinder or core 20 and causes the operation of this core to rotate it a half .revolution. When it is desired to stop the rotation of the core, the following mechanism is employed. A hand lever 21 pivoted on a stud 22 s provided with a roll 23 which runs in a groove 24 on the hub of the gear 18. When this handle is pressed up the gear 18 will be forced down against the opposition of a spring 25 but its teeth do not come out of mesh with the teeth of the internal gear 17. Fixed to the cylinder itself is a barring collar 26 which has radial openings 27 for the reception of the end of a bar adapted to be inserted by hand and turned to rotate the core as may be desired when it is disconnected from the drive. The bottom of the gear 18 is made of a. noncircular shape, preferably that indicated in Fig. 12. That is, it has two opposite concentric circular portions 28 and two concentric circular portions 28 drawn on a smaller ra dius. This fits an opening of the same size and shape formed in the barring collar 26. Therefore, it will be seen that the lower shouldered portion of the gear 18 can move down into the barring collar so that it "no longer registers with the opening in it, and after it has moved down, the turning of the gear will not rotate the cylinder 20, as the projection 28 can rotate freely in a circular opening of thesame diameter. When the handle 21 is released the gear 18 can move up when the cylinder 20 is turned back to its original position or a position diametrlcally opposite or when the gear 18 is so turned. When that happens the spring 25 will raise the gear 18 and the projections 28 will'rotate the cylinder. To limit the up ermost position of the gear 18 a plate 29 is astened.

to the top of the barring collar 26 and pro vided with a circular portion of the same ra-' dius as the surfaces 28.

. 3 is a worm 30 which drives the mechanism iso for operating the back of themold, but also has a connection with the operation of the cylinder 20. It directly drives a worm wheel 31 to which is fixed the back and controlling cam 32 which carries the pouring cam 33.

The casting box cam is fixed on a shaft 34 on which is a cam 35. This cam operates a roll 36 on a pivoted arm 37 to which is pivoted alink 38 connected with an arm 39 on a shaft 40. This shaft has another arm 41 carrying a counterweight 42 for counterbalancing the "revolution of the shaft 34, and the gearing is so timed that it occurs once during every alternate revolution of the Geneva gear9. In this way during every cycle the Geneva roller 16 will pass above and out of mesh with the Geneva cam during one of its revolutions, and during the subsequent revolution in the same cycle it will enter the slot of the Geneva cam and rotate it a quarter turn.

The latter is geared to the cylinder 20 through the case heretofore.

interior of the cylinder.

the gears 17 and 18 in a ratio to cause the cylinder to rotate throughahalf revolution duringthe portion of the cycle indicated on the diagram, Fig. 3. .As the Geneva action is positive itdoes notpermit any overrunning and there is no need for detents 0r ratchet action. No shock is felt at either the stopping or starting as the cylinder partakes of the characteristic gradual action at these points of the Geneva movement.

I Before leaving the subject of the rotatable cylinder 20,which constitutes the core of the mold, it is to be stated that this cylinder is cooled in a more efficient way than has been This method of cooling differs from the existing methods in the manner of introducing the .waterinto the Heretofore this has been done byspraying the inner surface of the cylinder through a large number ofsmall orifices in the walls of the tube surrounding the axle. This produces a great number of fine streams of water, some of the openings for which were likely to be clogged up because of their small size, and the water was delivered in a spray which was retarded somewhat by the air. I

, In "this instance the water is delivered througha central passage 48 up through the column and is connected with suitable passages 49 of comparatively large size with a hollow head 50 which is cylindrical in form and receives the water under full pressure.

In the top of this head on the outer surface are a small number of comparatively large perforations 51 through which the water flows in a quiet manner, without producing a spray, against the grooved inner surface 52 of the cylinder. The upperpart ofthis surface is curved and the water mushrooms out and flows gently down the sides of the cylinder without turbulence. In this way the plate is cooled with the use of less water than i possible by tle use of the sprinkler above referred to, because all of the water ejected from the header is used to cool the plate and nonefof the efiiciency is lost by the water'rebounding or splashing off the inner walls of the cylinder.- The holes 51, being larger, there is little likelihood of small matter clogging them. The water is controlled by a valve 53 placed on the supply line operated by a lever 54. 1

As will be seen later, this lever is connected with the mechanism for controlling the pour so that when no metal is delivered to the mold, no water is delivered to the interior of the cylinder. This avoids the chilling of the mold prior to the casting of the: plates. The water for cooling'the back is controlled by the same lever and passes through flexible pipes 56 for that purpose. 7 I

For the purpose of operating the back, the cam 32 is provided as stated. T he" groove of this cam operates a roll 57 which is mounted on a worm: wheel segment 58 pivoted on a stud 59. This Worm wheel segment therefore oscillates as the gear 31 turns. It meshes with a gear segment 60 fixed on a sleeve 61 which is mounted on the shaft 34. This sleeve 61 is provided with arms 63 which support studs 64. Each ofithese studs has an eccentric portion 65 and is adapted to be turned through a Worm wheel 66 thereon. A shaft 67 having aworm 68 and having threaded engagement at 69 with projections on the arm 63 which is provided for turning this stud64; These two shafts 64 support the ends of toggle linksTO and on account of the possibility of turning /the shaft 64, these toggle links can be adjusted out and in to get the proper position. These toggle links are pivotally connected with the back 71 of the mold and the whole mechanism isadapted to open and close this mold or. back against the cylinder 20. The back is mounted as usual on two wheels 72 on each side running on horizontal tracks 7 3. ,Thus the turning of the segment 58 will open and close the mold without operating the shaft- 34 thereby.

On the sleeve 61-isacam 75 whigh, of course, swings with the sleeve and when this sleeve swings to a position to open the mold the cam engages a roll 76'on an arm carried by the switch box 77 and opens the limit It may be stated at this time that the start- 

